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| Number | Title | Issue Date |
| 7331498 | Method for refining and homogeneously distributing alloying partners and for removing undesirable reaction products and slags in or from soft solder during the production of fine solder powder Method for refining and homogeneously distributing alloying partners and for removing undesired reaction products such as oxides and/or slag in or from soft solder during the production of fine solder powder, in which the solder alloy is melted in a high temperature... | 02/19/2008 |
| 7276205 | Injection device and process for the injection of a fluid The invention relates to an injection device for the reliable introduction of a fluid into a metallurgical vessel having a refractory lining, the device being removably insertable in the lining; comprising a refractory first body (2) and a refractory second b... | 10/02/2007 |
| 7258831 | Injector-burner for metal melting furnaces The following invention relates to an injector-burner for applications in the metalwork field, in particular for use in electric arc furnace melting processes having a frontal head with two series of holes arranged in two concentric crowns, the inner crown of holes ... | 08/21/2007 |
| 7143788 | High temperature line expansion installation with bellows An flexible coupling is shown for an insulated piping system of the type used to convey steam and other high temperature fluids. The coupling uses a flexible bellows and additional insulating and joining components to couple conventional lengths of insulated pipe. T... | 12/05/2006 |
| 7132077 | Method and apparatus for containing and ejecting a thixotropic metal slurry A container system including a vessel for holding a thixotropic semi-solid aluminum alloy slurry during its processing as a billet and an ejection system for cleanly discharging the processed thixotropic semi-solid aluminum billet. The crucible is preferably formed ... | 11/07/2006 |
| 7066980 | Method for manufacturing metal powder A method in which a metal powder is produced by ejecting a thermally decomposable metal compound powder into a reaction vessel through a nozzle together with a carrier gas under the condition V/S>600, where V is the flow rate of the carrier gas per unit time (liter/... | 06/27/2006 |
| 6602317 | Method and apparatus for controlling temperature uniformity of the burden in a direct reduction shaft furnace A method and apparatus for increasing hydrocarbons to a direct reduction shaft furnace while controlling the temperature uniformity of the center portion of the iron burden wherein the hydrocarbon gases used in direct reduction may be preheated, which inc... | 08/05/2003 |
| 6454833 | Process for producing liquid pig iron or semifinished steel products from iron-containing materials In a method for producing liquid pig iron (9) or steel pre-products from fine-particulate iron-containing material (4) in a melter gasifier (1), the iron-containing material (4) is melted in a bed of solid carbon carriers (2) under supply of carbon-contai... | 09/24/2002 |
| 6210463 | Process and apparatus for the continuous refining of blister copper Copper matte is processed to anode copper without oxidizing blister copper in an anode furnace. Copper matte, in either molten or solid form, is fed to a continuous copper converting furnace in which it is converted to blister copper and slag. The blister... | 04/03/2001 |
| 5571475 | Reducing and smelting furnace having filter layer In a process and an apparatus for the production of liquid metal (4) from fine-grain metal oxide particles, the particles, together with hot reducing gas, are blown against a heated bulk material filter layer (9) of lump coal and/or ceramic pieces, a subs... | 11/05/1996 |
| 5511767 | Copper smelting apparatus A copper smelting apparatus for processing of copper concentrates to produce blister copper requiring relatively low capital cost and land area. The apparatus combines batch smelting processing to produce copper matte with continuous processing to produce... | 04/30/1996 |
| 5480474 | Process and apparatus for smelting reduction of ores or pre-reduced metal carriers A process and apparatus for smelting reduction of ores or pre-reduced metal carriers in the form of an emulsion composed of slag, liquid metal and floating coke particles which pass from a smelting reduction reactor to a separate settling tank through a c... | 01/02/1996 |
| 5474280 | Apparatus for preheating a reactor feed A method and apparatus for preheating a reactor feed, comprised of an iron ore (10) and a process gas (21), in an iron carbide process for making steel is provided. The apparatus comprises a process gas preheater (40) having a furnace (56) and a heat exch... | 12/12/1995 |
| 5472478 | Reduction of metal oxides and vessel A method of reducing metal oxides in a vessel containing a molten bath, the bath comprising a metal layer and a slag layer, wherein metal oxides and carbonaceous material are introduced into the bath, gas is injected into the slag layer to case the erupti... | 12/05/1995 |
| 5358223 | Hot-blast main for hot-blast stove system of a blast furnace A hot-blast main for a hot-blast stove system of a blast furnace has a refractory structure comprising a plurality of courses of refractory bricks. At least a first one of the courses has at least one part thereof comprised of a plurality of expansion-joi... | 10/25/1994 |
| 5166950 | Process and apparatus for melting a furnace charge Process for melting a furnace charge, with post-combustion of the smokes by njecting an oxygenated gas in the furnace atmosphere as a series of jets flowing according to a tangential component in the space between electrodes and cylindrical furnace partiti... | 11/24/1992 |
| 5114122 | Apparatus for heat processing glass batch materials An apparatus and method are disclosed for processing glass-making materials under oxidizing conditions, and for processing materials, such as hazardous or toxic wastes, or smelting under reducing conditions. As a glass-making apparatus the invention inclu... | 05/19/1992 |
| 5069715 | Direct smelting process and apparatus The present invention relates to an overall direct smelting process which provides for separating the carburization function from the heating function to permit separate control of the individual functions. One embodiment of the smelting reactor is divide... | 12/03/1991 |
| 5060913 | Integrated metallurgical reactor A smelting reduction process is carried out in a smelting reactor which includes a central internal carburization/combustion plenum or chamber in which hot metal is carburized by the injection of coal fines and heated by post combustion of the coal gases.... | 10/29/1991 |
| 4995906 | Method for smelting reduction of iron ore A method for smelting reduction of iron ore, comprises the steps of: introducing iron ore into a preheat and prereduction furnace and preheating and prereducing the iron ore, a prereduction degree being less than 30%; charging the iron ore, carbonaceous m... | 02/26/1991 |
| 4987838 | Device for injecting preheated air into a shaft furnace The device is composed of several separate elements consisting of at least one central tubular element connected, on one side, by means of a first ball-and-socket joint and a first compensator to a first connector supplying preheated air and on the opposi... | 01/29/1991 |
| 4978106 | Iron reduction apparatus A method and apparatus for reducing iron in a steelmaking process including a closed thermal transfer system in which a flow of process ingredients including iron ore is directed in a descending, preferably spiral path defined by a downwardly spiraling pi... | 12/18/1990 |
| 4958808 | Apparatus for producing sponge iron or pig iron A process for producing sponge iron from iron ore is described, which is reduced to sponge iron in a reduction shaft furnace by means of a hot reduction gas. For this purpose reduction gas at a temperature in the range 750° to 900° is introduced into sh... | 09/25/1990 |
| 4853030 | Method and apparatus for the manufacture of metallic filaments A method and apparatus for the manufacture of metallic filaments is provided. The method and apparatus are used in the continuous manufacture and production of metallic filaments. The apparatus comprises a vertical reactor having a vertical chamber and ha... | 08/01/1989 |
| 4804167 | Apparatus for making noble metal/non-noble metal composite powder A compound powder being comprised of a noble metal and of a nonnoble metal oxide is produced under atomization of salts of these metals in a watery solution and under further utilization of a hot reactor wherein a droplet containing gas flow is moved insi... | 02/14/1989 |
| 4732368 | Apparatus for the pyrometallurgical treatment of finely divided materials Process and apparatus for pyrometallurgically treating finely divided ores, concentrates, residues, slags and like materials. The process utilizes a reactor having two co-axially extending, vertical reaction chambers. The process comprises forming within ... | 03/22/1988 |
| 4687183 | Apparatus for the production of liquid iron from iron oxide Method and apparatus for producing liquid iron from iron oxide, wherein the iron oxide is substantially converted to sponge iron by passing reducing gas through it in a reduction column and is then melted in a melt vessel which is in open communication wi... | 08/18/1987 |
| 4531718 | Iron ores treatment apparatus A fixed bed reactor specially adapted to be used in the gas-solid reaction for the production of sponge iron. The flow of gas is ascendant, entering at the bottom through a gas distributor specially designed to assure a uniform gas flow.... | 07/30/1985 |
| 4399983 | Apparatus for the production of liquid iron, especially for directly producing liquid iron from ore A method for producing liquid iron, especially for producing liquid iron directly from iron ore, mainly comprising the steps of saturating an iron bath in a container by blowing particulate carbon into the bath, dropping iron ore onto a central portion of... | 08/23/1983 |
| 4371151 | Blast furnace smelting of zinc A tuyere for a blast furnace, the main body of the tuyere being in the form of a tube with a central bore and the nose portion of the tuyere having a downwardly-inclined hood-like extension of the upper wall of the tube, whereby gas passing through the no... | 02/01/1983 |
| 4354669 | Apparatus for regulating the quantities and percentages of the gaseous constituents of oxygen, nitrogen, carbon dioxide and water in reaction processes in metallurgical applications An apparatus is provided for regulating the percentage quantities of individual gases present in the combustion air supplied for reaction processes in metallurgy. A molecular sieve absorption material is used on the intake air to absorb the inert constitu... | 10/19/1982 |
| 4348225 | Batch process and static-bed type apparatus for reducing iron ore Static bed type iron oxide reducing apparatus comprises reduction furnaces and cooling chambers respectively associated with the furnaces. Iron oxides are charged into the furnaces and reducing gas is applied to the raw materials to carry out a reducing r... | 09/07/1982 |
| 4338123 | Method and apparatus for the reduction of metal ores A method and apparatus is disclosed for reducing metal ore to sponge metal in a vertical shaft, moving bed, gaseous reduction reactor by controlling the amount of gas intermixing between the reduction and cooling zones of the reactor to result in increase... | 07/06/1982 |
| 4309024 | Cupola with auxiliary gas generator A cupola for the melting of metal is provided with an auxiliary gas generator which supplies through the forehearth hot carbon monoxide rich gas to the bottom of the cupola as a source of heat. The heat of the gases maintains the cupola hearth and forehea... | 01/05/1982 |
| 4235425 | Impact bed gasifier-melter A method and apparatus for producing molten iron in which pulverized coal is gasified with oxygen in an iron melting chamber, iron pellets on an upstanding hearth in the melting chamber are exposed to the gasification heat and melted. Molten iron trickles... | 11/25/1980 |
| 4223876 | Apparatus for direct recovery of metal from metal-bearing ores Iron, for example is directly recovered from relatively fine-grained (having a grain particle size range of less than 250 microns), iron-bearing ore whereby carbon-containing materials and oxygen-containing materials are fed through a molten metal bath an... | 09/23/1980 |
| 4221366 | Gas distributing closure plug for metallurgical reactor Improved cooling of sponge iron in the cooling reactor of a multi-stage gaseous reduction system for particulate iron ore is achieved by using a hollow foraminous closure plug at the bottom of the reactor. The plug is pivotally mounted for movement from a... | 09/09/1980 |
| 4205830 | Apparatus for the direct reduction of iron using gas from coal A method and apparatus for the direct reduction of iron in which a fossil fuel is gasified to produce a hot gas which is tempered with a carbon dioxide lean gas. The mixture is reacted with carbon to upgrade it in reducing potential and is desulfurized by... | 06/03/1980 |
| 4153426 | Synthetic gas production Disclosed is a method and apparatus for producing synthetic gas by using a blast furnace as a gasifier. The furnace is charged in a conventional manner with particles of solid carbonaceous material such as normal, low grade or undersized coke together wit... | 05/08/1979 |
| 4150817 | Mixing chamber A mixing chamber for mixing hot blast exiting from a hot blast stove with cold blast from a supply thereof to provide a uniform blast mixture adapted to be introduced into a blast furnace. The chamber comprises an open ended tubular member defining openin... | 04/24/1979 |
